Global Patent Index - EP 2554249 B1

EP 2554249 B1 20160210 - COMPOSITE SEMIPERMEABLE MEMBRANE

Title (en)

COMPOSITE SEMIPERMEABLE MEMBRANE

Title (de)

HALBDURCHLÄSSIGE VERBUNDMEMBRAN

Title (fr)

MEMBRANE COMPOSITE SEMI-PERMÉABLE

Publication

EP 2554249 B1 20160210 (EN)

Application

EP 11762784 A 20110328

Priority

  • JP 2010077003 A 20100330
  • JP 2011057637 W 20110328

Abstract (en)

[origin: EP2554249A1] Disclosed is a composite semipermeable membrane, which comprises a separation functional layer on a microporous support, and in which the separation functional layer is made of a condensation product of a polymer that has acidic groups and a trialkoxysilane groups having an imidazolium structure in side chains. The composite semipermeable membrane has excellent selective separation performance for divalent ions over monovalent ions, while exhibiting excellent long-term durability. Also disclosed is a method for producing the composite semipermeable membrane. The composite semipermeable membrane is suitable for uses in various water treatment fields such as the desalination of seawater and the production of drinking water. In addition, the composite semipermeable membrane does not deteriorate as much as conventional composite semipermeable membrane even in cases where the membrane is sterilized by having chlorine-containing raw water permeate therethrough continuously or intermittently.

IPC 8 full level

B01D 71/82 (2006.01); B01D 69/12 (2006.01); B01D 71/70 (2006.01); B01D 71/78 (2006.01); C08F 8/00 (2006.01); C08F 26/06 (2006.01); C08G 77/26 (2006.01); C08G 77/442 (2006.01)

CPC (source: EP KR US)

B01D 65/022 (2013.01 - EP KR); B01D 67/0006 (2013.01 - KR); B01D 67/0027 (2013.01 - KR); B01D 69/12 (2013.01 - EP KR); B01D 71/70 (2013.01 - EP KR US); B01D 71/78 (2013.01 - EP); B01D 71/82 (2013.01 - KR); C08G 77/26 (2013.01 - EP KR); C08L 83/08 (2013.01 - EP KR); B01D 67/0006 (2013.01 - EP); B01D 67/0027 (2013.01 - EP); B01D 71/82 (2013.01 - EP); B01D 2321/16 (2013.01 - EP KR); B01D 2321/343 (2013.01 - EP KR); B01D 2325/14 (2013.01 - EP); Y02A 20/131 (2018.01 - EP)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2554249 A1 20130206; EP 2554249 A4 20131204; EP 2554249 B1 20160210; AU 2011235748 A1 20120927; CN 102834167 A 20121219; CN 102834167 B 20141105; JP 5776550 B2 20150909; JP WO2011122560 A1 20130708; KR 101744207 B1 20170607; KR 20130038195 A 20130417; SG 183809 A1 20121030; US 2013032530 A1 20130207; US 8672143 B2 20140318; WO 2011122560 A1 20111006

DOCDB simple family (application)

EP 11762784 A 20110328; AU 2011235748 A 20110328; CN 201180017098 A 20110328; JP 2011057637 W 20110328; JP 2011526730 A 20110328; KR 20127023589 A 20110328; SG 2012062022 A 20110328; US 201113579138 A 20110328